[Haskell-cafe] haskell.org

amindfv at gmail.com amindfv at gmail.com
Tue Apr 21 00:22:32 UTC 2015

While we're at it, the "foldr (:) [] [1,2,3]" example probably isn't going to cause anyone to give away their worldly possessions and dedicate their lives to haskell.


El Apr 20, 2015, a las 18:53, Ertugrul Söylemez <ertesx at gmx.de> escribió:

> Hi everybody,
> I'd like to note that the prime "sieve" example that is sitting at the
> top of the homepage is not a real sieve and will more likely make people
> with number theory experience (like me) feel highly irritated rather
> than fascinated.  A real sieve does not only run a million times (!)
> faster and consumes far less memory, but is also much longer, even in
> Haskell.  Here is a real one:
>    <http://lpaste.net/101980>
> I don't want to make a mountain out of a molehill, but please note:  If
> I'd be new to Haskell, that example would have turned me off, because it
> would have hurt my ability to take Haskell programmers seriously.  You
> can easily promote your tools when you claim that they can build a car
> easily, except in reality it's just a toy bicycle.
> It's the same feeling to cryptographers when people call a regular
> stream cipher a "one-time pad" and promote it as such.  It rings the
> "this is snake oil!" alarm bell.
> So I propose to either rename the 'sieve' function to something more
> appropriate (like `trialDiv`) or replace the example altogether.  I
> would suggest an example that truly shows Haskell's strengths.  Trial
> division search is really just a bad substitute for the more common and
> equally inappropriate list quicksort example.
> Greets,
> Ertugrul
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